Fernando casablancas



F. CASABLANCAS. I

SPINNING FRAME.

APPLICATION FILED DEC. 15. 19!].

l ,3 1 3, 1 64: I Patented Aug. 12, 1919.

N N N" 'fl'll'ii 1 2 i 13 H2 1 W W 6 's u UNITED STATES PATENT orricn CASAIBLANGAS, 0F SAIBADELL, BARCE'LON A, SPAIN.

SPINNING-FRAME.

To all whom it may concern:

Be it known that I, FERNANDO GAsABLAN- OAS, subject of the King of Spain, residing at Sabadell, Barcelona, Spain, have invented certain new and useful Improvements in Spinning-Frames, of which the following is a specification.

-My' invention relates to spinning frames and. other machines used in spinning in which the drawing of textile rovings is produced. My invention is specially applicable to the modern spinning machines in which a roving of comparatively great width is directly converted into thread through astrong drawing and successive twist.

In these machines and generally in all the machines in which the drawing of a roving is effected, when the roving comes out of the drawing cylinders, it still keeps the same width as when it enters the feeding cylinders, but the number of fibers has diminished proportionally to the drawing effected, so that the greater the drawing, the more are the fibers separated. That is to say, that if the rate of drawing is, for instance, represented by 10, when; the roving comes out of the drawing cylinders it will have only the tenth part of the fibers that it had when entering the feeding cylinders, distributed through all the width of the roving. After the roving has passed through the drawing cylinders it receives the twist and all the fibers are gathered in the median line of the roving; but as, when it receives the twist, the fibers are much separated from each other, it results that some of them are not caught by the twist but they fall, separating from the roving. This in first place produces irregularities in the thread and furthermore when the. fibers fall on the bar that supports the; cylinders, they form a thin cloud which is dragged along by any gust of wind and that sometimes entangles itself with the thread increasing its thickness and sometimes breaks it. Furthermore the cleaning cylinders receive a great amount of fibers which tend to deposit in a fixed point of the cylinder forming balls which often fall causing ruptures and irregularities in the thread. c

The object of my invention is to prevent these irregularities in the" thread and this loosening of the fibers from the roving, reducing the width of the roving before it arrives at the drawing cylinders and therefore while the drawing is effected and before it Specification of Letters Patent. Patented Aug. 12, 1919- Application filed December 15, 1917. Serial No. 207,391.

receives the twist, gathering the fibers of the roving around its median line. Thus when the roving arrives at the drawing cylinders it has a reduced width which differs very little from the width that it has after having received the twist, thus preventing the escape of the fibers from being caught during the twisting operation 'and'also avoiding a loose roving.

My invention consists in arranging in front of the drawing cylinders a condenser of the width of the roving constituted by a guide of angular form, fan shaped, presentingthe sides inclined in the direction of the roving. This guide ispositioned next to the drawing cylinders between them and the feeding cylinders and in the machines provided with endless belts to convey the roving to the drawing cylinders it is positioned between said belts and the drawing cylinders. The roving enters into the guide through the widest part of it and leaves through its narrowest'part. With this arrangement the fibers located in the edges of the roving, when leaving the belts or the ,7

feeding cylinders, are supported and conveyed by the guide or condenser, the receiving end of which is substantially of the same width as the roving. As the roving passes through the condenser the fibers are directed into the narrower part thereof where they are gathered forming a roving of reduced wi'dt' The condenser is so supported, that it may slide longitudinally with respect to the cyl inders and follow the oscillations that are given to the roving. In most spinning frames 'th is condenser may be arranged in such a way that its lower face rests on the lower drawing cylinder.

I am aware that in publications that have come to my notice, condensers have been shown and described as having an osclllating .motion to agree with the transverse movement of the roving. However, my present invention differs from this arrangement in that my condenser is arranged to slide freely parallel to the drawing cylinders in addition to being carried along by the transverse reciprocating movement of the roving.

In describing my invention in detail reference will be had to the accompanying drawings wherein like symbols refer to like or corresponding parts throughout the several views and in which:

Figures 1 and 2 refer to the usual method of drawing representing in Fig. 1 the width of the roving before and after passing through the drawing cylinders but without having receivedthe twist, and Fig. 2 representing the positions taken by the fibers of the roving when they receive the twist.

Figs. 3 and 4 are views similar to Figs. 1

I and 2 but with the employment of my improved condenser, which is shown in section.

5, 6 and'7 represent in elevation, plan and section a form of my condenser.

Fig. 8 is a lateral view of Fig. 9.

Fig. 9 represents a variation in the way of supporting my condenser. Y

Figs. 10 and 11 represent in elevation and plan, respectively, a way of supporting a condenser of the form represented in Figs. 5, 6 and 7 applicable especially to the spinning frames provided with endless belts to corvey the roving to the drawingcylinders; an

Figs. 12 and 13' represent in elevation and plan a variation of this way of supporting the condenser.

Relatingspecially to Figs. 1 to A, the line 1 represents the contact orpressure' line of- L the drawing cylinders and it is supposed that before the roving 2 arrives at the drawing cylinders, that is, beforeit arrives at the line 1 it has the width represented'in said figures.

Through, the line 1, that is, through the drawing cylinders pass only the drawn fibers that form the roving 3. If the rate of draw ing is very great the fibers of the roving 3 remain much separated and many of them fall. On forming the thread 4 with the twist, Fig. 2, several fibers 5 do not enter into the fan 9 and are not caught by the twist, but fall without forming part of the thread.

According to my invention the width of the roving is reduced before the fibers arrive at the line 1, that is before they arrive at the contact line of the drawing cylinders and to this end they are passed through an angu lar or conical guide 6, Fig. 3 that reduces.

the width of the rdving 2; thus it becomes a 'roving 7 of reduced width inwhich the fibers are condensed resulting in producing adherepce between such fibers that prevents them from falling when the twist is effected to produce the thread 8, 4:. In the case of Fig. 2, the fan 9, that is formed through the twist, is very open or of a very wide baseowing to the great separation of the fibers and in the case of Fig. 4 the fan 10 isof small base because the fibers come out of the drawin cylinders close together.

The con enser 6 is susceptible of some vanation in construction. In Figs. 5, 6 and 7 it is represented of cast metal, has a flat base- 11 ofangular shape to support the roving inclosed by. inclined lateral walls 12, 13,

leaving the opening 14 for the passage of the roving. In the base there is a transverse to rest on the cylinder.

This condenser is positioned as is repre-' sented in Figs. 8, 9." The condenser 13 is mounted so that the opening 15 in its base receives the rod 17 which has the two branches 16 which are secured to the bar 18. The condenser represented in Figs. 5, 6, 7, can be made of cast or pressed metal or of any other convenient material such as glass, porcelain, etc.

The relative positions of the condensers in relation to the drawing cylinders is shown in Figs. 8, 10 and 12. The condenser 13 is positioned as near as possible to the drawing cylinders 22, 23, so that the vertex or the narrowest part of the condenser remains as near as possible to the .contact point of the drawing cylinders. When it oscillates on the rod 17 it rests on the cylinder 23 as is indicated in Figs. 8, 10 and 12.

In Figs. 10 to 13 there is represented the application of the condenser of Figs. 5, 6 and 7 to the mechanism for drawing textile rovings with endless belts to convey the rovings to the drawings cylinders. In Figs. 10 and 11 is shown the case of endless belts with two exterior guiding rods and rest plate beneath the lower belt, and in Figs. 12, 13, the case of belts with exterior guiding rods and interior rod in the lower belt. In both cases the belts are guided by plates 28, 29. The roving passes between the endless belts 24:, 25, and upon leaving same enters into the condenser 13; this reduces the width of the roving and conveys it to the contact point of the cylinders22, 23. According to the arrangement of these figures the rod that supports the condenser rests on the plates 28, 29 that guide the endless belts. According j to Figs. 10, 11, the reducer slides freely on a I ends 27 of which are bent twice at right angles and are inserted-in two holes 32 in the plates 28, 29 that guide the endless belts. At the same time the plates form the stop 30 which limits the vertical oscillating movement of the condenser. 1 I

It is understood that difierent forms can be given to the condenser according to the particular cases of its application, keeping always its essential feature of presenting a wide opening for the entrance of the roving which width is reduced toward the exit of the condenser.

I claim 1. In mechanism of the character described including drawing cylinders, a con- 

